Brendan O'Rourke is accused in the October 2010 shooting at Kelly Elementary School

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O'Rourke, seen here at an earlier court hearing, has undergone several psychiatric examinations.

New information in the trial of the Carlsbad school shooter claims the defendant scouted a second school before settling on Kelly Elementary as the site of his attack according to a published report.

In an exclusive report from our media partner the North County Times, court documents show Brendan Liam O'Rourke told investigators he had considered Jefferson Elementary but targeted Kelly Elementary because it had easy access.

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Defense attorney Daniel Segura told the paper that four doctors have found his client has a severe mental illness, possibly schizophrenia or delusional disorder.

Other details included in the court documents show O'Rourke felt tortured by former co-workers, had thrown out many of his personal items in the days leading up to the shooting and claims to have flushed his personal identification down a toilet to avoid being the victim of fraud, the paper reports.